Watermarking embossing machine



P. D. PARSONS.

WATERMARKING EMBOSSING MACHINE. AiPLICATlON FILED JAN.7,1921.

. Patented Mar. 7,1922.

[11 V62? lor UNITED. STATES PATENT OFFICE.

'ro sco'rr Puma COMPANY, A CORPORATION OF PENNSYLVANIA.

. WATERMAIR-KING EMBOSSING- MACHINE.

To all whom it may concern:

Be it known that I, PHILIP D. PARSONS,

jected to a drying operation, whereby atrade-mark or other character maybe formed in the body of the paper to give it the appearance ofwater-marking.

Heretofore, in the manufacture of paper articles, such as towels, thetrade-mark was embossed on each towel by means of rolls and this wasaccomplished with the paper in its finished and dried condition and aspart of the operation of sub-dividing'and folding it in the making ofthe towels. The embossing so produced was not always effective and beingperformed on dry paper material was not sharp and distinct, and moreoveroccupied more of the surface than was desirable. It has also beenattempted to make a proper marking of the paper web as it passes throughthe paper making machlne by impressing the moist web with rubber dies ofsuitable character which were intended to densify the fiber and therebygive somewhat of an appearance similar to a watermark, but the use ofimpressing devices of yielding material was not satisfactory and themarking was blurred and very indistinct and uncertain.

My object in the present invention is to more specifically overcome theobjections which have heretofore been embodied in the embossing of thepaper by the methods above stated, and this I accomplish by providingthe paper making machine itself with metal pressing wheels adapted toact upon the web ofpaper in the act of being dried, so that thedensification of the fiber takes place in the configuration ortrade-mark word simultaneously with the drying operation with the resultthat the impressmn produced upon the surface of the paper has all of thecharacteristic appearances of water-marking in that in those partsimpressed, the densification of the fiber gives a smooth, clean finish-making machine.

Specification of Letters Patent. Pat t d Mar. 7 1922 Application filedJanuary 7, 1921.

Serial No. 435,587.

to the design or trademark, whereas the paper web generally is of a moreor less open fibrous character having absorbent qualities such asrequired by paper towels, napkins, etc. Furthermore, owing to the factthat the impress on is formed on the paper by hard metal impressingdevices while in the act of being dried, the impression is sharp andclearly defined and no rough usage can eliminate the sharpness ofoutline from the paper after being fully dried.

W1th the above and other objects in view, the nature of which will bemore fully understood from the the invention consists in the novelconstruction of a water-marking embossing machine, as hereinafter morefully described and do fined in the claims.

description hereinafter,

' Referring to the drawing: Fig. 1 is a side elevation of an embossingmachine embodying my improvements and moreparticularly for use inconnection with a dryJing cylinder of a paper making machine; ig. 2 is aplan of a portion of the same; Fig. 3 is a perspective View of the meansfor carrying the embossing wheel; and Fig. 4: is a perspectlve view of aortion of the perimeter of the embossing'w eel.

2 is the main frame of the machine and in the particular instance is apart of the side frame for the drying cylinders of a paper 3 is a dryingcylinder Whlch may be steam and about which the paper web passes in theoperation of being dried. Ordinarily, there are a large number of dryingcylinders to a paper making machine,'butso far as the present inventionis concerned, consideration to more than one cylinder need not be given.Arranged above the drying cylinder 3 and movable toward the same underspring pressure, are embossing or marking wheels 4 of hard material,such as metal, having embossing projecting portions 5 corresponding toletters or other marks to be impressed upon the "paper web as it isconveyed under the said embossing wheels by the drying cylinders 3. Theembossing heated, as is customary,

wheels are arranged at intervals apart lon- I gitudinally of the dryingcylinder and are supported inia manner to be simultaneously raised outof contactvwith the paper and drying cylinder by hand manipulation, or

into contact with the paper and with any desired degree of pressure,also by hand adjustment, and the details for accomplishmgtheseoperations will now be described.

A shaft 7 (made tubular for lightness) is journalled in bearing 6 ateach end of the drying cylinder 3, so that it is parallel to the axlsthereof and preferably somewhat to one side of the center of the dryingcylinder. This shaft 7 is provided with a segmental ar 8 which isengaged by a worm 9 having a vertical shaft 10 and a hand wheel-27 bywhich it may be rotated. The shaft 10 is journalled in a bracket 11extending from the opposite portion of the bearing 6. By

rotating the worm 9, the shaft 7 may be iven a rotary reciprocatoryadjustment,

lamped at intervals along the shaft 7 are sleeves 12, the same beingformed in two parts bolted together at 13 to. provide a clamping actionso that the said sleeves 12 move w1th the rotary movements 'of the shaft7 but at the same time have capacity for adjustment circumferentiallythereof to permit adjustment in assembling the machine. Each one ofthese sleeves 12 support one of the embossin wheels 4 by similarmechanism and it will sufficeto describe one set of this mechanism.

The sleeve 12 is provided with upwardly extending jaws 14 between whichis arranged a hinged frame 15 journalled to Sald jlaws on a transversepivot pin 16. The

inged frame 15 carries at its outer or free end the embossing wheel 4 insuch manner that it is free to rotate under the influence of the aperweb and d1? cylinder. The rear en of the pivoted rame 15 is providedwith leaf springs 17 which rest upon an adjusting screw 19 adjustable inan arm 18 extending from the sleeve 12, said screw being adapted topress upon the springs 17 l for putting them under greater or lesstension and in that manner applyin greater or less pressure of the.embossing W eel 4 upon the. paper. 20 is a lock nut upon the screw 19 bywhich it may be locked in its adjusted position upon the arm 18.

It will now be understood that the embossin pressure desired may beinsured-by the a ustment of the screw 19 and the extent of sprinpressure developed by the spring 17 in orcing the embossing wheel 4toward the paper and cylinder 3, but this is only effective when-theshaft 7 is given .a rotary adjustment to bring the embossing wheel downtightly upon the paper. When the shaft 7 is rotated to lift theembossing wheel 4, the limited degree of oscillation of the frame 15 inthe jaws 14 of the sleeve 12 will, after a given amount of pressure has.

been relieved, cause the frame 15 to contact with the metal of thecollar so that it cannot fall toward the drying cylinder, andconsequently a further rotation of the shaft 7 will act to entirely liftthe embossing ting of some resiliency during the embossing operation.

As it is important to maintain the projecting portions 5 of theembossing wheel 4 free from fiber or lint, I provide means for directingan air or other blast u onthe perimeter of the said embossing w eels,and the air may be at ordinar temperatures or heated, if so desired. T emeans em loyed for accomplishin the supply of tlie air blast are the folowing: rrang ed above the shaft 7 and parallel to it is a sup ly tube 25which is supported in upright brackets 26. This tube is provided with anipple 24 from which a rubber hose 23 extends, the said hose connectingwith a nipple '22 on the pivoted frame 15. This last mentioned nipple 22is provided with a tubular passage terminating in a blast nozzle '21which is directed toward the raised portions 5 of the embossing wheel 4.The rubber tube 23 permits of any adjustment of the frame 15 relativelyto the s eeve 14 and also permits adjustment of the shaft 7 and theconnecting parts without disturbing the fixed position of the air supplytube 25. Instead of air for the blast, steam or other means and even afine water jet may be employed for keeping the embossing wheel clear oflint, etc. I

In practice, I have found that the embossing wheels 4- are best made ofbrass as they are easily engraved and,do not rust, and moreover aresufiicientl hard to make a clean sharp impression. T e letters formed onthe perimeter indicated at 5 may be engraved thereon with sufficientdepth that, at

intervals of six months, they may be slightly turned down on the face torenew their sharpness to overcome the slight wear. Also, if desired,sufficient metal may be formed in the rim of the wheel that the entireembossing letters or projections ma be turned off and a new setengraved. ny chan e in the diameter of the wheel may readily %e comensated for by the adjustment of the sha 7 carrying the wheels and othermechanism by which they are supported and moved. It will be manifestthat, if desired, instead of forming these embossing wheels 4 of metal,they may be formed of glass or other hard material which may be moldedand will not be injured by the moisture arising from the damp web,though metal is along the length of the shaft 7 and the drying cylinder3, so that as many lines of embossing in transverse relation may beprovided upon the paper sheet, as desired. In the present instance,there would be lines of embossing of the trade-mark upon the paper webat such intervals as would sufiioe the requirement when the paper web issubdivided into narrow webs and then into towels after it has beendried.

When the 'paper web is being adjusted over the drying cylinders in thepaper making machine, the shaft 7 may be adjusted so as to lift all ofthe embossing wheels 4 clear of the cylinder 3 and the paper web. Afterthe paper web has been adjusted and the paper making machine is inoperation, the shaft 7 may be again adjusted to lower the embossingwheels 4 into contact with the paper web and with sufiicient adjustmentto enable the springs 17 to firmly press the wheels in contact with thepaper with a yielding pressure.

It will now be apparent that I have devised a novel and usefulconstruction which embodies the features of advantage enumerated asdesirable, and while I have in the present instance shown and describedthe preferred embodiment thereof which has been found in practice togive satisfactory and reliable results, it is to be understood v that Ido not restrict myself to the details,

as the same are susceptible of modification in various particularswithout departing,

from the spirit or scope of the invention.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a machine of the character stated, the combination of a dryingcylinder with an embossing wheel of hard resistant material having itsperimeter provided with embossing projections, means for supporting theembossin wheel with capacity for adjustment to an from the dryingcylinder, and hand operable means for adjusting the supporting meanswhereby the embossing wheel may be raised clear of the paper, and springdevices carried by the supporting means for applying a greater or lesspressure between the embossing wheel and the paper web upon the dryingcylinder.

2. The invention according to claimil,

further characterized by having a blast nozzle carried with thesupporting means for the embossing wheel and directed toward theperimeter thereof, and means for supplyin g a blast medium to thenozzle.

wherein the adjustable supporting means for the embossing wheel isprovided with a blast nozzle movable with it during adjustment anddirected toward the perimeter of said wheel, and flexible tubular meansfor su plying the blast medium to the nozzle while permitting adjustmentof the supporting means.

4. The invention according to claim 1, further characterized by havingthe spring means to force the wheel toward the drying cylinder underyielding pressure, and ad justing devices for varying the operativetension of the spring.

5. In a machine of the character stated, the combination of a dryingcylinder over which a paper web travels, a transverse shaft parallel tothe axis of the cylinder, a plurality of embossing wheels of hardresistant material havin their perimeters provided with raised em ossinprojections and said wheels arranged in axial alinement parallel to theaxis of the drying cylinder, a plurality of supporting devices for therespective wheels adjustably clamped upon the shaft so that they may beindividually circumferentially adjustable thereon, said deviceshavingspring means for yieldingly pressing the wheels toward the dryingcylinder, and hand operable means for giving the shaft a rotaryadjustment for simultaneously raising and lowering the plurality ofembossing wheels.

6. The invention accordin to claim 5, further characterized by provi ingeach of the adjustable supporting, devices for the embossing wheels witha blast nozzle for directing a blast upon the perimeter of the wheel, astationary blast supply pipe and a plurality of flexible connectionsfrom the blast pipe to the respective blast nozzles of the plurality ofembossing wheels.

In testimony of which invention, I hereunto set my hand.

PHILIP D. PARSONS.

he invention according to claim 1,-

